The PID problem is the PV performance degradation caused by high voltage to the earth for a long time. PV solar power plants Advantages The industry's first Dynamic Adaptive Voltage (DAV) feature, which balancing system safety and recovery speed perfectly. Multiple protective features to avoid secondary damage to the power station and operator. Powerful wireless monitoring system to obtain system status anywhere at any time. PID Offset Box Hights High Efficiency Fast repair of PV module Dynamically repair voltage prevent the degradation of island pv system insulation Low power consumpton Wide range of input voltag High Reliability High reliability for safety Compatible with the cathode grounding and insulation Monitoring device Comprehensive protection functions IP65 outdoor application Smart Controlling Auto start, easy operation and maintenance free Smart indicator display Output overload and short circuit protection Smart remote monitoring (optional) Flexible & Friendly Parallel connection, convenient and reliable Applicable to central and string inverters Compact design easy installation Various operating modes(optional) We are pid box supplier,provide PV PID recovery solution.